It's different management styles. Lampard's clearly more tactically pragmatic in terms of base setup which lends better to the instant gratification nature of the modern game, but Sarri's inflexibility I took at face value when he said "once you perfect plan A, then you move onto plan's B, C & D". Again reflective of a man who very slowly worked his way up the management ladder, patience isn't a problem for him nor is being preoccupied with others lack of patience.... "Chelsea isn't pressure, managing in tier 8 of Italy is pressure" (words to that effect).

I completely agree with you about the different priorities of both though. Sarri's priority was enjoying himself coaching a team to play his football, plainly said it in his first press conference, so in a sense his motives were selfish (not disingenuous though) in a way you can't argue with Lampard's.